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Calculate the molal depression constant ...

Calculate the molal depression constant of a solvent which has freezing point `16.6^(@)C` and latent heat of fusion `180.75 "J g"^(-1)` :

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`K_f=(RT_f^2)/(1000xxL_f)`
`R=8.314JK^(-1)mol^(-1)`
`T=16.6^@C=273+16.6=289.6K,`
`L_f=180.75Jg^(-1)`
Substituting the values in the above equation,
`K_f=(8.314xx(289.6)^2)/(1000xx180.75)=3.86`
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